Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Temperature and precipitation values from PRISM data (PRISM Group at Oregon State University 2009) for trap sites within each region during the 1991–2000 study period. Mean monthly high and low temperatures (°C) are represented by black lines, and precipitation (cm) is represented by vertical gray bars.
